| 摘要 |
A packaging case (C; C') erected by folding from a one-piece vacuum formed moulded sheet, has rectangular walls (1-4; 71-74) that fold, and are clipped closed, about an article (A; S) to be protected from shock. The ends of the case are almost-completely closed by conformal edge-to-edge abutment of end-flanges (8-11; 78-81) of serpentine profile that are upstanding from the walls (1-4; 71-74). The flange-edges are each moulded with ridges (13, 15) and grooves (14, 16) that nest ridge-within-groove with those of the abutting edges, for absorbing shock. The walls (1-4; 71-74) are hinged together edge-to-edge, and at their edges rise in steps (23, 24, 33.34, 43, 44) to a central plinth (22, 32, 42). The steps (23, 24, 33, 34, 43,44) of adjacent walls abut one another within the erected case for shock absorption, and each wall (1-4; 71-74) is strengthened by circular recesses (25-28, 35-38, 45-49) of reducing diameter with depth, let into its plinth (22, 32.42). The circular recesses produce frusto-conical shock-absorbing projections (57, 58, 60, 62, 63) on the outside of the case. The case (C') may accommodate a stack (S) of component-carrying trays (T) protected by end-caps (83). |
